package com.secondary.action.userAction;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.Random;

import javax.imageio.ImageIO;
import javax.imageio.stream.ImageOutputStream;

public class RandomNumUtil {
	private ByteArrayInputStream image;
	private String str;       
	private RandomNumUtil(){      
	    init();
	}      
	     
	public static RandomNumUtil Instance(){      
	return new RandomNumUtil();      
	}      
	     
	public ByteArrayInputStream getImage(){      
	return this.image;      
	}      
	     
	public String getString(){      
	return this.str;      
	}      
	    
	private void init() {      
	
	int width=85, height=40;      
	BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);      
	   
	Graphics g = image.getGraphics();      
	   
	Random random = new Random();      
	
	g.setColor(getRandColor(200,250));      
	g.fillRect(0, 0, width, height);      
	
	g.setFont(new Font("Times New Roman",Font.PLAIN,25));      
	      
	g.setColor(getRandColor(160,200));      
	for (int i=0;i<155;i++)      
	{      
	int x = random.nextInt(width);      
	int y = random.nextInt(height);      
	int xl = random.nextInt(12);      
	int yl = random.nextInt(12);      
	g.drawLine(x,y,x+xl,y+yl);      
	}      
	
	String sRand="";      
	for (int i=0;i<4;i++){      
	String rand=String.valueOf(random.nextInt(10));      
	sRand+=rand;      
	    
	g.setColor(new Color(20+random.nextInt(110),20+random.nextInt(110),20+random.nextInt(110)));      
	      
	g.drawString(rand,13*i+10,26);      
	}     
	     
	this.str=sRand;      
	     
	g.dispose();      
	ByteArrayInputStream input=null;      
	ByteArrayOutputStream output = new ByteArrayOutputStream();      
	try{      
	ImageOutputStream imageOut = ImageIO.createImageOutputStream(output);      
	ImageIO.write(image, "JPEG", imageOut);      
	imageOut.close();      
	input = new ByteArrayInputStream(output.toByteArray());      
	}catch(Exception e){      
	   
	}      
	    
	this.image=input;   
	}      
	      
	private Color getRandColor(int fc,int bc){      
	Random random = new Random();      
	if(fc>255) fc=255;      
	if(bc>255) bc=255;      
	int r=fc+random.nextInt(bc-fc);      
	int g=fc+random.nextInt(bc-fc);      
	int b=fc+random.nextInt(bc-fc);      
	return new Color(r,g,b);      
}
}
